175 mm artillery refers to a type of heavy artillery piece that fires projectiles with a diameter of 175 millimeters (approximately 6.89 inches). This caliber is typically used in howitzers, which are versatile artillery pieces designed for firing shells at high angles. The 175 mm artillery was notably used by various military forces, including the United States, during the Cold War era.
The term "173 mm artillery" typically refers to a type of artillery piece with a 173 mm caliber. However, as of my last update in October 2023, there isn't a widely known or standard artillery piece specifically designated as 173 mm. Most artillery calibers are found in increments of 10 or 20 mm, such as 155 mm or 203 mm.
170 mm artillery typically refers to large-caliber artillery pieces that use 170 mm (or approximately 6.69 inches) caliber shells. These artillery systems can include howitzers, field guns, or other types of artillery designed for indirect fire support. One of the most notable examples of 170 mm artillery is the Soviet 2S7 Pion, a self-propelled howitzer introduced in the 1970s.
The term "164 mm artillery" typically refers to a type of artillery weapon with a caliber of 164 millimeters. However, it's worth noting that there isn't a widely known or standard artillery caliber of exactly 164 mm. Artillery calibers typically include common measurements such as 105 mm, 155 mm, and 203 mm (which corresponds to 6 inches).
160 mm artillery refers to a type of artillery piece that has a caliber of 160 millimeters (mm). This caliber falls within the category of heavy artillery, which is used for bombardment and providing indirect fire support in military operations. Artillery of this caliber can come in various forms, including towed howitzers, self-propelled guns, and mortars.
155 mm artillery refers to a category of large-caliber artillery systems that fire projectiles with a diameter of 155 millimeters (approximately 6.1 inches). This caliber is widely used by many military forces around the world for its balance of range, explosive power, and accuracy. 155 mm artillery includes both towed and self-propelled howitzers, as well as mortars.
152 mm artillery refers to a category of artillery pieces that have a bore diameter of 152 millimeters (approximately 6 inches). These artillery systems are typically used for long-range bombardment and can include howitzers, field guns, and other types of towed or self-propelled artillery. They are designed to fire large caliber shells over significant distances and are effective against a variety of targets, including enemy fortifications, troop formations, and vehicles.
150 mm artillery refers to artillery pieces that have a caliber of 150 millimeters, which is roughly 5.9 inches. This standard size has historically been used in various types of artillery, including howitzers and field guns. Key points about 150 mm artillery include: 1. **Types of Artillery**: 150 mm artillery can encompass a range of weapon systems, such as towed howitzers, self-propelled guns, and coastal defense artillery.
The term "145 mm artillery" typically refers to a type of artillery piece that fires shells with a diameter of 145 millimeters. This caliber is less common than other standard artillery calibers such as 105 mm, 155 mm, or larger systems. Typically, artillery pieces can include towed howitzers, self-propelled guns, and mortars, among others.
140 mm artillery typically refers to artillery pieces that fire projectiles with a diameter of 140 millimeters. This caliber falls within the category of medium to heavy artillery. Artillery systems of this size can include towed howitzers, self-propelled guns, and multiple launch rocket systems. Historically, various countries have developed 140 mm artillery systems, often used for indirect fire support in military operations.
The term "138 mm artillery" generally refers to a type of artillery piece that fires projectiles with a diameter of 138 millimeters. However, it is important to note that this specific caliber is not as commonly recognized in modern military artillery as others like 105 mm, 155 mm, or 203 mm. One example of artillery in this caliber is the Soviet D-30 howitzer, which is a 122 mm artillery piece (though slightly different).
The term "135 mm artillery" generally refers to artillery pieces that have a caliber of 135 millimeters. This caliber can be associated with various types of artillery systems, including howitzers, field guns, and mortars. A well-known example of a 135 mm artillery system is the 135 mm M-46 towed gun, which was developed by the Soviet Union and has been used by several countries.
The term "133 mm artillery" generally refers to a type of artillery piece that fires projectiles with a diameter of 133 millimeters. While there is not a widely known or standard artillery caliber at exactly 133 mm, certain artillery systems may utilize a similar caliber, which could be specific to certain countries or designs. For reference, artillery is classified into various categories based on caliber, including light artillery (howitzers, mortars), medium artillery, and heavy artillery systems.
130 mm artillery refers to a category of artillery that uses 130 mm caliber shells. This caliber is primarily used in towed and self-propelled howitzers and is designed for various military applications, including bombardment, indirect fire support, and destruction of enemy fortifications and equipment. Historically, 130 mm artillery became notable during the Cold War, particularly in Soviet and Warsaw Pact military equipment.
128 mm artillery typically refers to a type of large-caliber artillery weapon system that fires projectiles of 128 millimeters in diameter. This caliber is not as commonly referenced as standard artillery sizes like 105 mm or 155 mm, but there are some notable systems associated with this caliber. One of the most recognized pieces of artillery in this classification is the **128 mm anti-aircraft gun** used by Germany, notably the **Flak 40**, which was designed during World War II.
The term "127 mm artillery" typically refers to artillery pieces that have a bore diameter of 127 millimeters (mm). This caliber is often associated with naval guns rather than traditional ground-based artillery. A notable example of a 127 mm naval gun is the American Mark 45 naval gun, which is widely used on various classes of U.S. Navy destroyers and cruisers. It is designed for engaging surface ships, land targets, and is also capable of launching guided munitions.
125 mm artillery typically refers to artillery systems that use 125 mm caliber shells, notably in the context of tank guns and some self-propelled howitzers. One of the most recognized uses of a 125 mm caliber is in the main guns of several Soviet and Russian tanks, such as the T-72, T-80, and T-90.
The term "122 mm artillery" typically refers to artillery pieces that fire shells with a caliber of 122 millimeters. This caliber is most commonly associated with towed and self-propelled howitzers, as well as some rocket artillery systems. One of the most prominent examples of a 122 mm artillery system is the D-30 howitzer, which is widely used by various countries and armed forces around the world. It has a range of about 15 kilometers (9.
120 mm artillery refers to a specific caliber of artillery that uses shells with a diameter of 120 millimeters (mm). This category typically includes medium artillery systems, often utilized for indirect fire support in military operations. The 120 mm caliber is commonly associated with mortars, howitzers, and some self-propelled guns. One of the most well-known systems that use 120 mm rounds is the 120 mm mortar, which is used by various armed forces around the world.
The term "114 mm artillery" typically refers to a type of artillery weapon system that uses a 114 mm caliber projectile. This caliber is less common than other standard artillery sizes, like 105 mm or 155 mm, but it has been used in various military applications, particularly during the Cold War era. One notable example of a 114 mm artillery piece is the M114 howitzer, which was used by various armed forces.

Pinned article: Introduction to the OurBigBook Project

Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
We have two killer features:
  1. topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculus
    Articles of different users are sorted by upvote within each article page. This feature is a bit like:
    • a Wikipedia where each user can have their own version of each article
    • a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
    This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
    Figure 1.
    Screenshot of the "Derivative" topic page
    . View it live at: ourbigbook.com/go/topic/derivative
  2. local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:
    This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
    Figure 5. . You can also edit articles on the Web editor without installing anything locally.
    Video 3.
    Edit locally and publish demo
    . Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact